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US3836448A - Frames for electrolytic cells of the filter-press type - Google Patents

Frames for electrolytic cells of the filter-press type Download PDF

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Publication number
US3836448A
US3836448A US00314817A US31481772A US3836448A US 3836448 A US3836448 A US 3836448A US 00314817 A US00314817 A US 00314817A US 31481772 A US31481772 A US 31481772A US 3836448 A US3836448 A US 3836448A
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US
United States
Prior art keywords
frames
electrolyte
cells
filter
zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00314817A
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English (en)
Inventor
P Bouy
D Collard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rhone Progil SA
Original Assignee
Rhone Progil SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rhone Progil SA filed Critical Rhone Progil SA
Application granted granted Critical
Publication of US3836448A publication Critical patent/US3836448A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells
    • C25B9/73—Assemblies comprising two or more cells of the filter-press type
    • C25B9/77—Assemblies comprising two or more cells of the filter-press type having diaphragms

Definitions

  • the invention relates to frames for electrolytic cells of the filter-press type, which, by means of their structural features, permit the charge per unit of surface area of the electrodes of such cells to be increased to the maximum possible level.
  • electrolytic cells of the filter-press type and especially those in which the elementary cells are connected electrically in series, have long been known. Because of their very compact construction, such cells make much more efiicient use of the surface area of manufacturing plants and require much less pipework for the inlet and the outlet of the fluids and much less capital investment on copper or aluminum for feeding them with electrical power.
  • the electrodes used can be metal structures whose construction includes a film-forming metal, such as titanium, zirconium, tantalum, tungsten and niobium, or metals or alloys of similar anodic properties, the anodically active parts of such structures being covered with conductive layers which are chemically inert to and unattackable in the electrolyte in question.
  • a film-forming metal such as titanium, zirconium, tantalum, tungsten and niobium, or metals or alloys of similar anodic properties
  • Such structures can in fact be provided in order that the electrolysis gases are given off mainly outside of the space between the cathodically and anodically active parts of the electrodes.
  • This factor combined in the case of cells of the filter-press type with the absence of any substantial ohmic loss in the electrodes due to transmission of the current perpendicularly to the electrolytically active surfaces of the electrodes, makes it possible on the one hand to increase the height of the electrodes and on the other hand to increase the current strength per unit of surface area without excessive rise in temperature occurring.
  • Such bipolar electrodes are in particular described by the applicants in concurrently filed Bouy et al. applications entitled Bipolar Electrodes, Ser. No. 314,728, filed Dec. 13, 1972, and Dismantleable Bipolar Electrodes, Ser. No. 314,783, filed Dec. 13, 1972, such applications corresponding, respectively, to French applications filed Dec. 21, 1971 and Dec. 22, 1972 under the Ser. Nos. 7145861 and 7146072.
  • the circulation of the electrolyte must be especially designed in order on the one hand to prevent excessive ion impoverishment of the electrolyte in proportion as it tends to rise in the spaces between the anodes and the cathodes, and on the other hand to prevent an excessive rise in the amount of gas bubbles in the electrolyte.
  • the frames according to the present invention which provide for the separation of the gases from the electrolyte in such a way that the channels connected to the upper parts of said frames serve for discharge of gases containing only a small amount of electrolyte droplets in suspen- S1011.
  • 'It is an object of the present invention to provide filterpress electrolysis cells which are free from the objections of the prior art.
  • FIG. 1 is a diagrammatical representation of an anodic frame of the present invention
  • FIG. 2 shows a part of an electrolysis cell in which the frames of the invention, such as those of FIG. 1 are mounted.
  • each frame of two separate zones: 1) a lower zone in which is fitted an anode or a cathode and on to the perimeter of which is fitted the sealing gasket, and (2) an upper zone in the form of a box which communicates with the lower zone by way of one or more apertures and in which separation of the gases produced by electrolysis from the electrolyte is effected.
  • the heights of the upper zones of the frames depend on the ease of separation of the gases and, when the cells are provided with diaphragms, the electrolyte pressure to be maintained in order to ensure that the electrolyte is circulated in the required direction. Consequently, according to the circumstances, the cathodic and anodic frames can have upper zones of equal or different heights.
  • This arrangement of the invention prevents the gas channels being blocked by the electrolyte and also makes it possible to prevent current leaks which can be substantial in the case of filter-press cells in which the electrical supply is in series, since the channels for the liquids, by way of which the current leaks occur, are of small cross-section and can be of the desired length in order to increase their ohmic resistance. Moreover, the sealing of the cells is ensured since the sealing gaskets are only necessary in the lower zones of the frames owing to the box shape of the upper zones.
  • the frames according to the present invention can be used in the construction of any types of filter-press cells, the nature of the material for forming the frames obviously being selected in accordance with temperature, the electrolyte to be treated, and the gases given off.
  • the material used can be insulating and can be, for example, plastic materials or it can be metallic in nature.
  • the choice of material for the frames if guided by considerations of resistance to chemical attack and also to the attack due, if the frames are made of metal, to the difference in potential between the frames and the electrolyte, such difference being caused by current leaks through the electrolyte collectors.
  • the frames according to the present invention are more particularly suited for the construction of filter-press cells in series connection, intended for the electrolysis of aqueous alkaline chloride solutions.
  • the frame shown in FIG. 1 is made of molded polyester, the lower zone 1 of the frame, which is intended to accommodate the anodic part of a bipolar electrode (not shown here), communicates with the upper box-shaped zone 2 of the frame by means of a series of apertures 3.
  • the chlorine produced escapes by way of the pipe 4 issuing at an upper point in the upper box-shaped zone 2.
  • the electrolyte which is separated from the chlorine in the upper zone 2 is reunited, by way of channels 5 which are provided in the very body of the frame, with the electrolyte inlet 6 which is located at the middle at the bottom of the lower zone 1, and passes into the anodic part of the bipolar electrode by way of the apertures 7.
  • Reference 8 denotes an electrical potential connection
  • reference 9 denotes a pressure connection
  • reference 10 denotes a temperature regulating connection
  • reference 11 denotes frame supports
  • reference 12 denotes a handling hole.
  • the cathodic frames (not shown) are similar to the anodic frames, except as regards their height, and are used conjointly in a diaphragm cell of which one end is diagrammaticaliy shown in cross-section in FIG. 2.
  • the bipolar electrodes used in this cell are described in the applicants above-mentioned concurrently filed patent application entitled Bipolar Electrodes, corresponding to French application, Ser. No. 7145861.
  • reference 13 denotes the anodic frames and reference 14 denotes the cathodic frames.
  • the former are higher than the latter in order to be able to have available the height of electrolyte necessary to compensate for the charge loss caused by its passage through the diaphragms.
  • the bipolar electrodes are denoted by reference 15, while reference 16 denotes the anodic parts formed by expanded sheets of titanium, or other film-forming metal, covered with platinum, and reference numeral 17 denotes the cathodic parts in the form of mild steel grids.
  • the two anodic and cathodic parts of each electrode are connected by welding to a mixed metal sheet 18 produced by explosion and formed of titanium and mild steel, for the electrical connection and separation of the catholyte from the anolyte.
  • Reference 19 denotes a simple end electrode which here comprises a mild steel grid connected to a thick ribbed plate of mild steel; the electrical outputs are denoted 'by reference 20.
  • Reference 20 denotes one of the end supports of the cell and reference 22 denotes a special packing frame.
  • the sealing means are denoted by reference 23, while reference 24 denotes the diaphragms which comprise asbestos fabric. All the chlorine outlets of the anodic frames are connected to the channel 25 while the hydrogen outlets are connected to the channel 26.
  • the electrolyte feed is effected by means of the channel 27, all the outlets being connected to a channel 28.
  • Frames intended to be mounted in electrolytic cells of the filter-press type characterized in that the frames comprise a lower zone provided for receiving an anode or a cathode, and a single upper zone in the form of a closed box for ensuring separation of the gases produced by electrolysis of the electrolyte, the upper zone extending said lower zone, the lower zone communicating with the upper zone by way of one or more apertures in the lower part of said box, sealing means ensuring sealing of the cells being applied over the periphery of the lower zone, separate frames being employed for anodes and for cathodes, said frames being free of electrically insulating partitions, said closed box occupies substantially the width of said frames, channeling means in the body of said frames for recycling electrolyte from said upper zone to the lower portion of said lower zone.
  • Frames according to Claim 1 characterized in that the electrolyte which is separated from the gases in the upper zone is recycled to the electrolyte outlet or inlet point by means of said channeling means.
  • Frames according to Claim 1 including channel means for conducting gases separated in the upper zone to a collecting channel connecting all the similar frames of the same cell.
  • Frames according to Claim 3 characterized in that the channels for collecting the gas flows and the general channels for the supply and/ or discharge of electrolyte, are integrated within the frame members.
  • Filter press electrolytic cells for the electrolysis of alkali chloride solutions comprising frames according to Claim 4, anodes and cathodes, said anodes alternating with said cathodes and said frames each separately housing each anode and cathode.
  • Filter press electrolytic cells for the electrolysis of alkali chloride solutions comprising frames according to Claim 1, anodes and cathodes, said anodes alternating with said cathodes and said frames each separately housing each anode and cathode.
  • Frames according to Claim 6 characterized in that the boxes forming the upper zones of the anodic and cathodic frames are of different heights.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Metals (AREA)
US00314817A 1971-12-23 1972-12-13 Frames for electrolytic cells of the filter-press type Expired - Lifetime US3836448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7146295A FR2169710B1 (fr) 1971-12-23 1971-12-23

Publications (1)

Publication Number Publication Date
US3836448A true US3836448A (en) 1974-09-17

Family

ID=9087937

Family Applications (1)

Application Number Title Priority Date Filing Date
US00314817A Expired - Lifetime US3836448A (en) 1971-12-23 1972-12-13 Frames for electrolytic cells of the filter-press type

Country Status (15)

Country Link
US (1) US3836448A (fr)
JP (1) JPS5210423B2 (fr)
AT (1) AT319279B (fr)
BE (1) BE793281A (fr)
BR (1) BR7209046D0 (fr)
CA (1) CA986458A (fr)
CH (1) CH562329A5 (fr)
DE (1) DE2262786C3 (fr)
FR (1) FR2169710B1 (fr)
GB (1) GB1388010A (fr)
IT (1) IT974236B (fr)
NL (1) NL166729C (fr)
NO (1) NO138253C (fr)
SE (1) SE388639B (fr)
SU (1) SU843769A3 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980545A (en) * 1973-07-06 1976-09-14 Rhone-Progil Bipolar electrodes with incorporated frames
JPS51119681A (en) * 1975-04-15 1976-10-20 Asahi Glass Co Ltd A cell frame for an electrolizer
US4048045A (en) * 1974-12-19 1977-09-13 Hooker Chemicals & Plastics Corporation Lengthening anode life in electrolytic cell having molded body
US4051009A (en) * 1975-05-19 1977-09-27 Basf Wyandotte Corporation Bipolar electrolytic filter press cell frame
US4062753A (en) * 1973-02-26 1977-12-13 Hooker Chemicals & Plastics Corporation Electrolysis method and apparatus
US4076609A (en) * 1975-01-14 1978-02-28 Societe De Recherches Techniques Et Industrielles Electrolysis apparatus
US4107023A (en) * 1976-07-09 1978-08-15 Hooker Chemicals & Plastics Corporation Filter press halate cell
US4120773A (en) * 1977-08-25 1978-10-17 Hooker Chemicals & Plastics Corp. Compressible self guiding electrode assembly
US4131532A (en) * 1975-10-29 1978-12-26 Societe Generale De Constructions Electriques Et Mecaniques "Alsthom Et Cie" Electrochemical oxygen production device
US4139448A (en) * 1978-01-03 1979-02-13 Hooker Chemicals & Plastics Corp. Separating web - electrolytic compartment frames assembly for electrolytic apparatuses
US4149952A (en) * 1975-04-15 1979-04-17 Asahi Glass Co. Ltd. Electrolytic cell
US4358357A (en) * 1979-02-09 1982-11-09 Creusot-Loire Apparatus for the electrolysis of water
US4402813A (en) * 1982-07-26 1983-09-06 Olin Corporation Composite fiber reinforced plastic electrode frame
US4439298A (en) * 1982-07-26 1984-03-27 Olin Corporation Composite fiber reinforced plastic frame
US4500379A (en) * 1982-07-26 1985-02-19 Olin Corporation Method of making a composite fiber reinforced plastic frame
US4533455A (en) * 1980-10-14 1985-08-06 Oronzio De Nora Impianti Elettrochimici S.P.A. Bipolar separator plate for electrochemical cells
US4557816A (en) * 1982-07-06 1985-12-10 Asahi Kasei Kogyo Kabushiki Kaisha Electrolytic cell with ion exchange membrane
US4839012A (en) * 1988-01-05 1989-06-13 The Dow Chemical Company Antisurge outlet apparatus for use in electrolytic cells

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO752886L (fr) * 1974-08-26 1976-02-27 Hodogaya Chemical Co Ltd
JPS5232866B2 (fr) * 1974-10-09 1977-08-24
JPS52153877A (en) * 1976-06-18 1977-12-21 Asahi Glass Co Ltd Structure of electrode chamber
JPS5248596A (en) * 1976-08-10 1977-04-18 Tokuyama Soda Co Ltd Bi-polar electrode for electrolysis of alkali halide solution with dia phragm method
JPS576537Y2 (fr) * 1978-03-06 1982-02-06
DE2934108A1 (de) * 1979-08-23 1981-03-12 Hooker Chemicals & Plastics Corp., 14302 Niagara Falls, N.Y. Verfahren und vorrichtung zur erzeugung von chlor, wasserstoff und alkalilauge durch elektrolyse von nacl- oder kcl-sole in einer diaphragmazelle.
CN103857832A (zh) * 2011-07-15 2014-06-11 埃赫曼公司 锰电解池的具有排气口的内箱及相关的电解池和方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB175401A (en) * 1920-11-15 1922-02-15 Dow Chemical Co Improvements in electrolytic cells
DE600583C (de) * 1932-03-24 1934-07-27 Hans Niederreither Dipl Ing Zersetzer, insbesondere elektrolytischer Druckzersetzer, zur Erzeugung von Wasserstoff und Sauerstoff unter hohem Druck
US2862864A (en) * 1954-08-10 1958-12-02 Pintsch Bamag Ag Electrolytic apparatus
DE1007746B (de) * 1955-04-01 1957-05-09 Lonza Ag Wasserelektrolyseur der Filterpressenbauart, insbesondere fuer Druckbetrieb
US3287251A (en) * 1962-04-02 1966-11-22 Horne Bi-polar electrochemical cell

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062753A (en) * 1973-02-26 1977-12-13 Hooker Chemicals & Plastics Corporation Electrolysis method and apparatus
US3980545A (en) * 1973-07-06 1976-09-14 Rhone-Progil Bipolar electrodes with incorporated frames
US4048045A (en) * 1974-12-19 1977-09-13 Hooker Chemicals & Plastics Corporation Lengthening anode life in electrolytic cell having molded body
US4076609A (en) * 1975-01-14 1978-02-28 Societe De Recherches Techniques Et Industrielles Electrolysis apparatus
JPS51119681A (en) * 1975-04-15 1976-10-20 Asahi Glass Co Ltd A cell frame for an electrolizer
US4069129A (en) * 1975-04-15 1978-01-17 Asahi Glass Company, Ltd. Electrolytic cell
JPS5313426B2 (fr) * 1975-04-15 1978-05-10
US4149952A (en) * 1975-04-15 1979-04-17 Asahi Glass Co. Ltd. Electrolytic cell
US4051009A (en) * 1975-05-19 1977-09-27 Basf Wyandotte Corporation Bipolar electrolytic filter press cell frame
US4131532A (en) * 1975-10-29 1978-12-26 Societe Generale De Constructions Electriques Et Mecaniques "Alsthom Et Cie" Electrochemical oxygen production device
US4107023A (en) * 1976-07-09 1978-08-15 Hooker Chemicals & Plastics Corporation Filter press halate cell
US4120773A (en) * 1977-08-25 1978-10-17 Hooker Chemicals & Plastics Corp. Compressible self guiding electrode assembly
US4139448A (en) * 1978-01-03 1979-02-13 Hooker Chemicals & Plastics Corp. Separating web - electrolytic compartment frames assembly for electrolytic apparatuses
US4358357A (en) * 1979-02-09 1982-11-09 Creusot-Loire Apparatus for the electrolysis of water
US4533455A (en) * 1980-10-14 1985-08-06 Oronzio De Nora Impianti Elettrochimici S.P.A. Bipolar separator plate for electrochemical cells
US4557816A (en) * 1982-07-06 1985-12-10 Asahi Kasei Kogyo Kabushiki Kaisha Electrolytic cell with ion exchange membrane
US4402813A (en) * 1982-07-26 1983-09-06 Olin Corporation Composite fiber reinforced plastic electrode frame
US4439298A (en) * 1982-07-26 1984-03-27 Olin Corporation Composite fiber reinforced plastic frame
US4500379A (en) * 1982-07-26 1985-02-19 Olin Corporation Method of making a composite fiber reinforced plastic frame
US4839012A (en) * 1988-01-05 1989-06-13 The Dow Chemical Company Antisurge outlet apparatus for use in electrolytic cells

Also Published As

Publication number Publication date
DE2262786A1 (de) 1973-07-05
FR2169710B1 (fr) 1974-10-11
CA986458A (en) 1976-03-30
SU843769A3 (ru) 1981-06-30
CH562329A5 (fr) 1975-05-30
JPS4878084A (fr) 1973-10-19
SE388639B (sv) 1976-10-11
DE2262786B2 (de) 1976-12-30
DE2262786C3 (de) 1984-02-16
BE793281A (fr) 1973-06-22
GB1388010A (en) 1975-03-19
NO138253B (no) 1978-04-24
BR7209046D0 (pt) 1973-09-13
AT319279B (de) 1974-12-10
NO138253C (no) 1978-08-02
NL166729B (nl) 1981-04-15
FR2169710A1 (fr) 1973-09-14
NL166729C (nl) 1981-09-15
JPS5210423B2 (fr) 1977-03-24
NL7217261A (fr) 1973-06-26
IT974236B (it) 1974-06-20

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